Machinery eor compressing gaseous bodies



UNITED STATES PATENT OFFIOE.

WILLIAM A. ROYCE, OF NEVBURGH, NEW YORK.

MACHINERY FOR COMPRESSING GASEOUS BODIES.`

Speccaton forming part of Letters Patent No. 17,394, dated May 26, 1857;Reissued December 24, 1872, Nos. 5,201 and. 5,202.

To aZZ whom may concern Be it known that I, WILLIAM A. ROYCE of the townof Newburgh, in the county of Orange and State of New York, have made anew, novel, and useful Improvement in the Construction of PneumaticCondensers, Reservoirs, and Conduits; and I hereby declare the followingto be a full, clear, and eXact description of the same, reference beinghad to the accompanying drawings, which drawings are lettered tocorrespond with and form a part of the specification.

Description: In order that the public may fully understand my invention,and those skilled in the art, be enabled to construct and operate thesame, I will describe it as follows.

Figure l represents a vertical section of my pneumatic cylinder orcondenser Letter (a) is a hollow piston-rod that connects with thedouble convex hollow piston. (b b) has a core (c) in its center withsutlicient space between the upper and lower head (or half) of thepiston and the said core to allow any fluid that passes up through thelower piston rod (a) into the lower section of the hollow piston to passaround the core (c) up into the piston rod (a) from whence it isdischarged through the small holes (d, Z,) in the upper end of thepiston rod after having performed the office of cooling the piston androd. The piston is bolted together through the core as shown at Figs. 1,2, 3. Letters (e, c, e, 6,) are ingress and egress valves thatcommunicate with the refrigerating pipe (f, f, f, f, f,) through whichthe compressed aeriform body from either enol of the cylinder is drivenby the movement of the piston Z9.) The great amount of heat evolved bycompression of elastic fluids is more or less dissipated by myrefrigerating pipe (or tube). A great amount of heat if desired may beabsorbed by the liquid surrounding the metallic cylinder (A A A) and themetallic tube (f, f, f, f, f,) the whole apparatus being submerged inthe liquid. In the lower end of the piston rod (a, a) there is a valveopening upward which admits the liquid to pass up into the piston rodwhen it is forced down as represented at The necessary Stuffing boxes atthe uppereand lower head of each cylinder is shown at (i,

At the lower end of the metallic cylinder there is a pump barrelconnected with the stuffing box (z', i) through which the piston rod (a,a) traverses thus forming a force pump by means of which a current offluid is circulated through the hollow double convex piston and rod forthe purpose as above set forth. The metallic cylinder heads are concave,convex and itted in order to work so close in the eX- treme stroke ofthe piston as to displace almost totally the contents of the cylinderwhether liquid or aeriform. Spray injections'may be used to counteractthe heat evolved by compression instead of the refrigerating pipe andhollow piston as above described and shown in the drawings, to effectthis a number of internal perforations through the cylinder heads todistribute the stream from a force pump or fountain is all that isnecessary. Any ordinary power may be applied to operate the pump bymeans of the crank as shown at (j, j, j,) in the drawings, or otherwise.

Figs. (2 and 3) represent a pair of cylinders similar in construction toFig. (1) and arranged upon a metallic bed plate for operating. Thecylinders (A) and (A) are of dierent capacity and work simultaneously,the larger discharging into the lesser cylinder. Any number of thesecylinders may be arranged and operated after the above plan (bydischarging larger into lesser) preserving the same principle of economyin force used to attain an elastic power in conduits or reservoirs, andat the same time bearing in mind to expose the compressed matter to therefrigerat-ing process as condensation progresses.

Fig. (4) is a reservoir for holding compressed air or other gaseousbodies and is provided with a safety valve stop cocks, &c., by which itscontents can be drawn 0E for use. The reservoirs and tubes are coated onthe inside with close grained metal, vegetable gums, resins, oils, orextracts to prevent the escape of the gaseous bodies through the poresof the investing metal.

The object of my pneumatic apparatus is to charge or fill reservoirs orconduits with compressed aeriform bodies by means of some knownmechanical power.. The force pumps (A, A) refrigerating pipes (f f f ff) and main reservoir are stationary as shown in the drawings and thecompressed gaseous media are transferred from the force purnp or purnpsor main pipes or this fixed Inain reservoir by means of pipes stopcocks, &c.

tial'ly as described and shown in the draW- 10 ings.

In testimony whereof I hereunto subscribe my name in the presence of twoWitnesses.

W. A. ROYCE. Witnesses:

THos. C. RING, CHAs. REEVE.

[FIRST PRINTED 1912;]

